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Yuexian Tech
Free Online Tools
FREE Yuexian Tech Free Image Tools
Free online image compression, smaller files with clear images
Batch compress, convert formats, and resize images. Everything stays in your browser.
Drop images here
or click to select multiple images
JPG · PNG · WebP · GIF · BMP supportedBatch ready
Add as many images as you need and process them in a queue.
Private by design
No sign-in and no uploads. Files stay on your device.
Free控制
Choose quality, format, and maximum dimension to balance size and clarity.
Free image compressor
Batch image compression without uploading files
Compress JPG, PNG, WebP, GIF, and BMP images in your browser. JPG is the default for broad compatibility, while WebP and PNG are also available. Set a maximum dimension to make uploads faster.
Are my images uploaded to a server?
No. Compression happens locally in your browser. This site does not receive or store your files.
Why is JPG the default output?
JPG is broadly compatible with websites, forms, and common upload platforms.
Can I compress many images at once?
Yes. Add multiple images, apply one set of settings, and download the results together.
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Product and development support by Yuexian Tech
Mini-program, app, and custom software development for Zhengzhou and remote clients in Beijing, Shanghai, Hangzhou, and beyond.
China Social Insurance Calculator
Estimate employee and employer social insurance plus housing fund contributions with editable city presets.
The published period and base range appear here
After employee contributions, before IIT: ¥0.00
Contribution breakdown
Updated from the current inputsContribution bases usually change annually, while some rates vary by employer industry or temporary policy. These editable presets do not replace an authority determination.
This estimate excludes individual income tax, special deductions, supplementary medical plans, and supplementary housing funds. Follow the employer declaration, payslip, and official local system.